Electromechanical derailleur for coaxial assembly
AssigneeSRAM Deutschland GmbH
InventorsHENRIK BRAEDT, HEIKO REDECKER
Life of this patent
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Abstract
The disclosure relates to an electromechanical rear derailleur for coaxial assembling on a rear wheel axle. The derailleur has a base element, a pivot mechanism, and a movable element having a chain guide assembly. The chain guide assembly is connected to the movable element so as to be rotatable about a rotation axis. A blocking device permits the chain guide assembly to be established relative to the movable element. The blocking device is able to be inserted into the movable element in two different positions.
Claims16
A rear derailleur for a bicycle gearshift mechanism, comprising:
- a base element attachable to a bicycle frame;
- a movable element coupled to the base element and repositionable relative to the base element;
- a chain guide assembly coupled to the movable element and pivotable relative to the moveable element about a pivot axle;
- a pre-tensioning installation configured to pre-tension the chain guide assembly relative to the movable element about the pivot axle to an initial setting, wherein the chain guide assembly, counter to a tensioning force of the pre-tensioning installation, is pivotable from the initial setting about the pivot axle to various operating settings;
- and
- at least one blocking device for blocking the chain guide assembly in at least one blocking setting, deviating from the initial setting, relative to the movable element,
- wherein the at least one blocking device has a blocking element which is repositionable between a passive setting in which said at least one blocking device releases the chain guide assembly relative to the movable element, and at least one active setting in which the at least one blocking device holds the chain guide assembly in the at least one blocking setting.
A method for adjusting a bicycle drive including a rear derailleur, a multi-chain wheel assembly, a front chainring and a chain, wherein the rear derailleur is adjusted relative to the multi-chain wheel assembly, the method comprising:
- determining a bicycle category;
- depending on the bicycle category, shifting to a reference sprocket, such that the chain engages with the reference sprocket;
- depending on the bicycle category, selecting an adjustment position and adjusting the at least one blocking device to a first, second or third position;
- repositioning the blocking device to an active setting such that a chain guide assembly is established relative to a movable element of the rear derailleur;
- and
- rotating the rear derailleur rearward about a rear wheel axle until an ideal chain tension is achieved.
Dependencies are inferred from the claim text.